How can I recreate an Icosphere made of separate triangles with AN?
This here is maybe not the fastest method but it is quite easy to implement:



You see it already takes more than 8ms, maybe it would be good to "bake" the triangle objects before you continue to work on your animation. To do that you can eg copy all the objects and remove the node tree afterwards. Alternatively you can also go into the advanced settings of the Object Instancer node and click on "Unlink Instances from Node" and remove the node tree then.